Headphone



FIG. 1 is a first perspective view of a headphone showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of the headphone in another position thereof; and,

FIG. 9 is a perspective view of the headphone in another position thereof.

The broken lines shown in the drawings depict portions of the headphone in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for a headphone, as shown and described. 